Portable pet ramp



FIG. 1 is a front elevational view of a portable pet ramp showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is an end elevational view thereof;

FIG. 6 is an opposite end elevational view thereof; and,

FIG. 7 is another right side elevational view thereof. The broken lines are for purposes of illustration only and form no part of the claimed design. 

The ornamental design for a portable pet ramp, as shown and described. 